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NPCC Reliability Reference Directory # 9 Verification of Generator

Gross and Net Real Power Capability

This document, when downloaded or printed, becomes UNCONTROLLED. Users should check the NPCC

website for the current CONTROLLED version of this document. 1

NPCC

Regional Reliability Reference Directory # 9

Verification of Generator


Task Force on Coordination of Operations Revision Review Record:

December 22, 2008

December 28, 2011

Adopted by the Members of the Northeast Power Coordinating Council, Inc., this December 22,

2008 based on recommendation by the Reliability Coordinating Committee, in accordance with

Section VIII of the NPCC Amended and Restated Bylaws dated July 24, 2007 as amended to

date.

NPCC Reliability Reference Directory # 9 Verification of Generator Gross and Net Real Power Capability

2 This document, when downloaded or printed, becomes UNCONTROLLED. Users should check the

NPCC website for the current CONTROLLED version of this document.

Version History

Version

Date

Action

Change Tracking (New,

Errata or Revisions)

0 12/22/2008 New

1 07/07/2009 Included FAC-008 in Section

3.0

Errata

2 12/28/2011 Phase 2 format Revisions

3 3/31/2015 Inserted Applicability of NPCC

Criteria

New





Table of Contents

Version History ....................................................................................................................... 2 Table of Contents .................................................................................................................... 3

Terms Defined in the Directory .............................................................................................. 4 A. Introduction ...................................................................................................................... 4

1. Title: Verification of Generator Gross and Net Real Power Capability .................... 4 2. Directory #: 9 ................................................................................................................ 4 3. Objective:...................................................................................................................... 4

4. Effective Date: December 22, 2008 ............................................................................. 4

5. Background:.................................................................................................................. 4

6. Applicability: ................................................................................................................ 4 B. NERC ERO Reliability Standard Requirements .............................................................. 5 C. NPCC Regional Reliability Standard Requirements ........................................................ 5 D. NPCC “Full Member” More Stringent Criteria Requirements ........................................ 5

1. Requirements ................................................................................................................ 5 1.1 Developing the List of Generators or Generation Facilities to be verified .................. 5

1.2 Establishing the Generator Real Power Capability Verification Program ................... 6 1.3 Implementing the Generator Real Power Capability Verification Program................. 7 1.4 Verification Criteria for Generator and Generation Facility Real Power Capability ... 8

1.5 Exemption of Generators or Generation Facilities from Verification Testing ............. 9 E. Compliance..................................................................................................................... 10

1. Compliance Monitoring Process ................................................................................ 10 2. Data Retention ............................................................................................................ 10

Responsible Entities shall keep evidence of compliance for a minimum of three years. A

Responsible Entity found non-compliant shall keep information related to the non-

compliance until found compliant. ....................................................................................... 10 Appendix A- Basic Flow Chart for Verification of Generator Gross and Net Real Power

Capability .............................................................................................................................. 12




Terms Defined in the Directory

There are no new terms defined in this Revision. The definitions of terms found in this

Directory appearing in bold typeface, can be found in the NPCC Glossary of Terms.

A. Introduction

1. Title: Verification of Generator Gross and Net Real Power Capability

2. Directory #: 9

3. Objective:

This Directory presents the minimum criteria requirements for verifying the

Gross Real Power Capability and Net Real Power Capability of generators or

generating facilities.

Compliance to the criteria requirements set forth in this Directory by each

applicable entity assures accuracy of information used in the steady-state models

to assess the reliability of the NPCC bulk power system.

This Directory has been developed to ensure that the requirements specified in

NERC Standard MOD-024-1, “Verification of Generator Gross and Net Real

Power Capability” are met by NPCC and its applicable members responsible for

meeting the NERC Reliability Standards.

4. Effective Date: 12/22/2008

5. Background: This Directory was developed from the draft NPCC A-13 Verification of

Generator Gross and Net Real Power Capability Criteria document whose

technical content was approved by the Reliability Coordinating Committee on

March 5, 2008 for conversion into a Directory. Version 0 of the Directory became

effective on December 22, 2008.

6. Applicability:

The requirements of an NPCC Directory apply only to those facilities defined as

NPCC bulk power system elements as identified through the performance based

methodology of NPCC Document A-10, “Classification of Bulk Power System

Elements,” the list of which is maintained by the NPCC Task Force on System

Studies and approved by the NPCC Reliability Coordinating Committee.





Requirements to abide by an NPCC Directory may also reside in external tariff

requirements, bilateral contracts and other agreements between facility owners

and/or operators and their assigned Reliability Coordinator, Planning Coordinator,

Transmission Operator, Balancing Authority and/or Transmission Owner as

applicable and may be enforceable through those external tariff requirements,

bilateral contracts and other agreements. NPCC will not enforce compliance to the

NPCC Directory requirements in this document on any entity that is not an NPCC

Full Member.

6.1 Functional Entities (Responsible Entities)

Generator Owners

Transmission Operators (in whose area the generator or generation

facility resides)

B. NERC ERO Reliability Standard Requirements

The NERC ERO Reliability Standards containing requirements that are associated

with this Directory include, but may not be limited to:

MOD-024-1 -Verification of Generator Gross and Net Real Power Capability

TOP-002-2 - Normal Operations Planning

FAC-008-1 - Facility Ratings Methodology

FAC-009-1 - Establish and Communicate Facility Ratings

C. NPCC Regional Reliability Standard Requirements

None.

D. NPCC “Full Member” More Stringent Criteria Requirements

1. Requirements

1.1 Developing the List of Generators or Generation Facilities to be verified

R1. The Transmission Operator shall develop and maintain documentation of

those generators or generation facilities that must verify the Gross Real

Power Capability and Net Real Power Capability for the summer and

winter capability seasons. The documentation maintained by the

Transmission Operator shall include the following:

http://www.nerc.com/files/MOD-024-1.pdf

http://www.nerc.com/files/TOP-002-2.pdf

http://www.nerc.com/files/FAC-009-1.pdf




R1.1 All generators or generation facilities Declared Gross Real Power

Capability and Declared Net Real Power Capability.

R1.2 All generators or generation facilities Verified Gross Real Power

Capability and Verified Net Real Power Capability, verification

date and method of verification.

R1.3 Discrepancies between a Generator Owner’s declared and verified

Gross Real Power Capability and Net Real Power Capability,

the reason for such discrepancies and the Generator Owner’s plan

to address the discrepancies.

R1.4 Generator Owner supplied Gross Real Power Capability and Net

Real Power Capability testing, manufacturer data, performance

tracking or operating historical data, certification documentation,

as specified by the Transmission Operator.

R1.5. All generators or generation facilities exempted from the

verification requirements and the basis for their exemption (see

Section 1.5).

1.2 Establishing the Generator Real Power Capability Verification Program

R2. The Transmission Operator shall establish and document a program to

periodically verify the Gross Real Power Capability and Net Real

Power Capability of all generators and generation facilities that are

subject to periodic seasonal Gross Real Power Capability and Net Real

Power Capability verification.

R3. The Transmission Operator shall provide any changes to its verification

process to the Generator Owners within 30 calendar days of issue.

R4. The Transmission Operator shall establish and document requirements for

a Generator Owner to notify the Transmission Operator within a specified

time period when its generator or generation facility cannot achieve the

Declared Gross Real Power Capability or Declared Net Real Power

Capability because of equipment issues.

R5. The Transmission Operator shall establish and document a time frame for

the Generator Owner to address equipment issues that result in a generator

or generation facility not achieving the Declared Gross Real Power

Capability or Declared Net Real Power Capability.

R6. The Transmission Operator shall establish and document the ambient

conditions that correspond to the summer and winter capability seasons for





which the Gross Real Power Capability and Net Real Power Capability

are verified.

R7. The Transmission Operator shall establish and document those

intermittent or small generating units whose capability may be represented

by verification results of a single generating unit.

1.3 Implementing the Generator Real Power Capability Verification Program

R8. The Transmission Operator shall request Generator Owners to verify the

seasonal Gross Real Power Capability and Net Real Power Capability

of their generators or generation facilities that are subject to periodic

seasonal Gross Real Power Capability and Net Real Power Capability

verification every three (3) years or more frequently as required by the

Transmission Operator. The two (2) capability seasons are defined as

summer and winter as specified by the Transmission Operator.

R9. If a Transmission Operator determines that only one seasonal generating

capability value is required for NPCC Bulk Power System reliability

analysis, then periodic verification will be required only for that particular

season.

R10. If a Transmission Operator determines that the difference between the

Declared Gross Real Power and Declared Net Real Power Capability

of a generator or generation facility is insignificant for NPCC Bulk Power

System reliability analysis, then periodic verification will be required for

only one numerical value.

R11. The Generator Owner shall provide generator or generation facility

Declared Gross Real Power Capability and Declared Net Real Power

Capability to the Transmission Operator.

R12. The Generator Owner shall provide evidence, upon request, to the

Transmission Operator that the generator or generation facility Gross Real

Power Capability and Net Real Power Capability have been verified.

R13. The Generator Owner shall report to the Transmission Operator any

discrepancies between declared and verified Gross Real Power

Capability or Net Real Power Capability within a time frame specified

by the Transmission Operator and develop and implement a plan to

resolve the discrepancies.




R14. The Generator Owner shall determine and report to the Transmission

Operator the generator or generation facility real power seasonal auxiliary

loads (including common station loads).

1.4 Verification Criteria for Generator and Generation Facility Real Power

Capability

R15. The Generator Owner shall comply with Transmission Operator requests

for periodic verification of Gross Real Power Capability and Net Real

Power Capability of their generators or generation facilities.

R16. The Generator Owner shall verify the Gross Real Power Capability and

Net Real Power Capability of thermal generators on the basis of

operation for no less than one hour.

R16.1. The verification of thermal generator’s capability shall include any

of the following:

Testing,

Use of operating historical data,

Commissioning data (for new generators only),

Performance tracking data acquired during the same

seasonal capability period.


Net Real Power Capability of internal combustion generators and gas

turbine generators. The verification shall correspond to operation for no

less than one hour under the ambient conditions established in R6 for

which the Gross Real Power Capability and Net Real Power Capability

are being claimed.

R17.1. The verification of internal combustion and gas turbine generators

capability shall include any of the following:

Testing,






Net Real Power Capability of hydro generators either on a generation

facility or on an individual generator basis. The Gross Real Power

Capability and Net Real Power Capability shall be determined on the

basis of the availability of sufficient water at an adequate head to provide

the output for no less than one hour.

R18.1. The verification of hydro generator’s capability shall include any of





the following:

Testing,






Net Real Power Capability of combined cycle generators on a generation

facility, individual generator or on a generator stage basis for no less than

one hour under the ambient conditions established by the Transmission

Operator in R6 for which the Gross Real Power Capability and Net Real

Power Capability are being claimed.

R19.1 The verification of a combined cycle generator’s capability shall

include any of the following:

Testing,






Net Real Power Capability of intermittent power resources (wind, solar,

tidal geo-thermal, etc.) using any of the following:

Manufacturer’s data,

Performance tracking,

Operating historical data


Net Real Power Capability of multiple generator facilities when limited

by common elements based on the real power capability of the facility and

not the sum of the capabilities of the individual generators.

R22. The Generator Owner shall identify any equipment or other factor that will

limit the capability of the generator or generation facility to meet its

Declared Gross Real Power Capability or Declared Net Real Power

Capability.

1.5 Exemption of Generators or Generation Facilities from Verification

Testing

R23. The Generator Owner shall notify the Transmission Operator and request

an exemption if it cannot conduct seasonal capability testing of a generator

or generation facility for any of the reasons listed below.




Adverse impact on transmission system reliability

Potential damage to transmission system or generator equipment

Environment conditions

Governmental regulatory or operating license limitations

An extended outage to the generator or generation facility

R24. The Transmission Operator shall, within 30 calendar days of receiving

notification from a Generator Owner that it is requesting an exemption

because it cannot perform verification for the required seasonal period,

notify the Generator Owner whether its generator will be exempted from

the seasonal capability testing. Where the exemption is approved, the

Transmission Operator shall coordinate with the Generator Owner to

reschedule the verification for the next seasonal verification period.

R25. The Generator Owner for a generator or generation facility exempted from

seasonal capability testing shall submit the following to the Transmission

Operator:

For existing generators, generator operation records, manufacturer

data, or performance tracking for the previous applicable seasonal

verification period for this generator or generation facility.

Engineering analysis in conjunction with performance tracking

data to justify any difference between a generators or generation

facilities declared capability and previous applicable seasonal

performance tracking data.

For new generators only, commissioning data.

E. Compliance

1. Compliance Monitoring Process

Compliance with the requirements set forth in this Directory will be in accordance with the

NPCC Criteria Compliance and Enforcement Program (CCEP).

Measures and corresponding Levels of Non Compliance for these requirements are contained

within the compliance template associated with this Directory.

2. Data Retention

Responsible Entities shall keep evidence of compliance for a minimum of three years. A

Responsible Entity found non-compliant shall keep information related to the non-

compliance until found compliant.





Prepared by: Task Force on Coordination of Operation

Review and Approval: Revision to any portion of this Directory will be posted by the lead

Task Force in the NPCC Open Process for a 45 day review and

comment period. Upon satisfactorily addressing all the comments in

this forum, the Directory document will be sent to the remaining Task

Forces for their recommendation to seek RCC approval.

Upon approval of the RCC, this Directory will be sent to the Full

Member Representatives for their final approval if sections pertaining

to the Requirements and Criteria portion have been revised. All voting

and approvals will be conducted according to the most current "NPCC.

Bylaws" in effect at the time the ballots are cast.

Revisions pertaining to the Appendices or any other portion of the

document such as links, glossary terms, etc., only RCC Members will

need to conduct the final approval ballot of the document.

This Directory will be updated at least once every three years and as

often as necessary to keep it current and consistent with NERC,

Regional Reliability Standards and other NPCC documents.

References: NPCC Glossary of Terms




Appendix A- Basic Flow Chart for Verification of Generator Gross and Net Real Power

Capability

Generator verification is

required

No

Notify

Generator Owners

Exempted from

seasonal verification

Yes

Document units/

data

Meet or Exceed

Declared Value

Gross and Net

verified

TOP review, resolve

issue and reschedule

Yes

No

Generator Owners

provided required

data or conducted tests

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